Transparent oven-door.



a. M. BECKER E LL. BRUWN. TRANSPARENT OVEN DOOR.

APPLICATION I` ILED N-OV. 25, 1910 1,010,845. Paten-ted- Dec. 5, 1911.

llNlThD SETES P t TRANSPARENT ovnnnoora.

T o all whom "it may concern.:

Be it known that we, CHARLES M. BECKER and LnioHToN L. Brown, subjectsot the King of Great Britain, and residents of Port Rowan` in the county of Norfolk, in the Province of Ontario, Dominion of Canada, have invented certain new and useful lmprovement-s in vTransparent Oven-Doors;

` and we do hereby declare that the tolle-wing is a full, clear, and exact description of the same.

The invention relates to improvements in transparent oven doors, as described in the following specification and illustrated in the accompanying drawings that form partof the same. c

The invention consists essentially in Jthe novel construction. and arrangement ot' parts, whereby the Atransparent portion of the door is covered by a movable shield,

member operating with the movement ot' the door.

. view of the improved oven door shown in its The objects of the invention are, to pre-1 open position, the protecting shield being partly broken away. Fig. 2 is a perspective view showing the oven door partly closed.

Like numerals of reference indicate corresponding parts in each figure.

Referring tothe drawings, 1 is the oven door pivota'lly supported at its lower edge and having the apertures 2 therein, said apertures being closed by the glass 8.

4 is a plate of sheet metal hinged at the upper edge to the door trame and adapted to fit into a recess 5 flush with the inner or upper surface of the door and with the bottom portion 6 thereof, said plate com- -pletely covering over the glass 3 on the iiiside of the door, so that articles may be placed upon the door in their placing or removal from the oven without danger of breakin the glass. The glass is alsovprotected rom being broken by spilling of liquids thereon.

7 is a bell crank lever pivotally secured to the inwardly extending lug 8 on the inside Specification of Lettrsatent'.

outside without` opening the door.

members 9 rigidly secured to the inside of yGHRIZES M. BECKER AND LEIGHTGN L. BROWN, OF PGBT RW'AN, ONTAR, CANADA.

Patented "Dec, 5, 1911.

Application led November 25, 1910.' Serial No. 594,211.

the plate 4 andits other member 10 projecting outwardly through a slot 11 in the door 1. 12 is a bracket secured to the front of the oven a short distance. below the bottom edge ot' the door 1. 13 is a bar pivotally secured at one end to the bracket 12 and formed with av jaw shaped outer end 14 pivotally secured to the outer end oit the outwardly extending member 10 of the bell crank lever.

In the operation of this device, when Vthe door is closed, the bar 13 holds the outwardly extending member 10 of the bell*v crank lever towar'd the bottom end of the slot 11 with the plate 4 extending into the oven at an angle to the oven ,door andpractically parallel with the top of the oven.

-The apertures 2 are thus uncovered and ,the

contents of the oven may be' seenv from the Upon the opening of the door, the downward -movement changes the relative position of the bar 13 and door 1 and the said door kswings the lever 7 on its pivot keeping the' plate 4 practically in a horizontal position until when the door reaches its lowermost position, the said platerests within therecess 5 and completely covers over the glass 3.

The device is very simple in its construction and operation. There are no parts to get out ot order and as the lever 7 ts -snugly in the slot l1 there are no apertures left open for the ingress of cold air'to the oven wlfienclosed.

`What we claimas our invention is 1. In a transparent oven door, the combination with the oven door having glazed apertures therein, of a member pivotally securedto said door and adapted to swing over and cover said apertures, and means operatively connected to said pivotal'member adapted to hold said member swung from said apertures when the oven door is closed and-to swing said member to cover said apertures on the openingot the door.

2. In a transparent oven door, the combination with the oven structure, of a door hinged at its bottom edge andk adapted to ,swing upwardly to close the door opening,

said door having closed apertures therein., a

platehingcd at its .upper edge to the inner' side of said door and adaptedto cover said apertures, a lever rigidly secured to said plate and extending outwardly from said ,plate pivotally secured to said door, a lever rigidl)7 secured to said plate, and a bar pivotally secured at one end to the oven and at the' opposite end operatively connected to said lever.

4. In a transparent oven door, a door piv-` otally supported at its bottom edge and having apertures therein and a recessed inner face and a slot extending through the frameI thereof, a plate hinged at its upper edge to the inner side of said door and adapted to rest in said recess Whenthe door is open, a bell crank lever having one of its members rigidly secured to said pivotal kplate member 20 and its other member extending outwardly through the slot in said door frame, and an arm pivotally secured to the outwardly-extending end of said lever and to the oven at a point belov7 said door.

Signed at Brantford, Canada, this 25th day of October, 1910.

CHARLES M. BECKER.

Witnesses: l

KATHLEEN OGRADY,

A. S. PITCHER. Signed at Duluth, Minnesota, U. S. AA., this 8th .day of November, 1910.

LEIGHTON L. BROWN.

Witnesses:

MARY E. MURPHY, W'ALTER A. HALL. i 

